Fig. 3

Population structure analysis, principal component analysis (PCA), and phylogenetic tree establishment of the 338 tea accessions. A The neighbor-joining tree was established by 100,829 high-quality SNPs. B Population structure separates the accessions into four subgroups (K = 4). C PCA of 338 tea accessions. And first and third components of the PCA analyses were shown; each dot represents an individual. D When K = 4, the CV error value was the smallest (0.51127)